Answer:
The percentage is k 
%
Explanation:
From the question we are told that
The mass of the stibnite is 
The volume of KBrO3(aq) is 
The concentration of KBrO3(aq) is 
Now the balanced ionic equation for this reaction is
The number of moles of 
is
substituting values
from the reaction we see that 1 mole of reacts with 3 moles of 
so 0.003325 moles will react with x moles of
Therefore
Now the molar mass of is a constant with a values of 
Generally the mass of is mathematically represented as
substituting values
The percentage of Sb(antimony) in the overall mass of the stibnite is mathematically evaluated as
k 
k %
<span>In science, computing, and engineering, a black box is a device, system or object which can be viewed in terms of its inputs and outputs without any knowledge of its internal workings. Its implementation is "opaque" (black)</span>
<span>the reaction is endothermic
</span><span>the δh is positive</span>
Answer:
H₂O
Explanation:
H₂O is the chemical formula of water.
Water is regarded as a "universal solvent". The reason behind this is the property of the water. Water is a solvent that can dissolve a variety of substances in itself. Any other liquid cannot dissolve the number of substances that the solvent water can. The reason behind being the universal solvent is the chemical composition and physical characteristics of water.
